Actinobacillus spp

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Actinobacillus spp under light microscopy

Actinobacillus spp are a ubiquitous carbohydrate-fermenting anaerobic bacteria which are rarely associated with gingivitis in dogs[1].

Species which are pathogenic include:

  • Actinobacillus actinomycetemcomitans

These pathogens are often cultured from the oral mucosa of dogs[2], where they are oassociated with plaque formation and gingivitis.

Other dentopathogenic bacteria are more commonly found such as Eikenella corrodens and Porphyromonas spp.


  1. Allaker RP et al (1997) Dental plaque flora of the dog with reference to fastidious and anaerobic bacteria associated with bites. J Vet Dent 14(4):127-130
  2. Allaker RP et al (1994) Prevalence of Eikenella corrodens and Actinobacillus actinomycetemcomitans in the dental plaque of dogs. Vet Rec 134(20):519-520